Merge pull request #5305 from mempool/natsoni/avoid-fetching-full-audit

Avoid fetching full audit on tx page

backend/src/api/bitcoin/bitcoin.routes.ts

@@ -42,6 +42,7 @@ class BitcoinRoutes {
       .get(config.MEMPOOL.API_URL_PREFIX + 'block/:hash', this.getBlock)
       .get(config.MEMPOOL.API_URL_PREFIX + 'block/:hash/summary', this.getStrippedBlockTransactions)
       .get(config.MEMPOOL.API_URL_PREFIX + 'block/:hash/audit-summary', this.getBlockAuditSummary)
+      .get(config.MEMPOOL.API_URL_PREFIX + 'block/:hash/tx/:txid/audit', this.$getBlockTxAuditSummary)
       .get(config.MEMPOOL.API_URL_PREFIX + 'blocks/tip/height', this.getBlockTipHeight)
       .post(config.MEMPOOL.API_URL_PREFIX + 'psbt/addparents', this.postPsbtCompletion)
       .get(config.MEMPOOL.API_URL_PREFIX + 'blocks-bulk/:from', this.getBlocksByBulk.bind(this))
@@ -361,6 +362,20 @@ class BitcoinRoutes {
     }
   }
 
+  private async $getBlockTxAuditSummary(req: Request, res: Response) {
+    try {
+      const auditSummary = await blocks.$getBlockTxAuditSummary(req.params.hash, req.params.txid);
+      if (auditSummary) {
+        res.setHeader('Expires', new Date(Date.now() + 1000 * 3600 * 24 * 30).toUTCString());
+        res.json(auditSummary);
+      } else {
+        return res.status(404).send(`transaction audit not available`);
+      }
+    } catch (e) {
+      res.status(500).send(e instanceof Error ? e.message : e);
+    }
+  }
+
   private async getBlocks(req: Request, res: Response) {
     try {
       if (['mainnet', 'testnet', 'signet'].includes(config.MEMPOOL.NETWORK)) { // Bitcoin

backend/src/api/blocks.ts

@@ -2,7 +2,7 @@ import config from '../config';
 import bitcoinApi, { bitcoinCoreApi } from './bitcoin/bitcoin-api-factory';
 import logger from '../logger';
 import memPool from './mempool';
-import { BlockExtended, BlockExtension, BlockSummary, PoolTag, TransactionExtended, TransactionMinerInfo, CpfpSummary, MempoolTransactionExtended, TransactionClassified, BlockAudit } from '../mempool.interfaces';
+import { BlockExtended, BlockExtension, BlockSummary, PoolTag, TransactionExtended, TransactionMinerInfo, CpfpSummary, MempoolTransactionExtended, TransactionClassified, BlockAudit, TransactionAudit } from '../mempool.interfaces';
 import { Common } from './common';
 import diskCache from './disk-cache';
 import transactionUtils from './transaction-utils';
@@ -1359,6 +1359,14 @@ class Blocks {
     }
   }
 
+  public async $getBlockTxAuditSummary(hash: string, txid: string): Promise<TransactionAudit | null> {
+    if (['mainnet', 'testnet', 'signet'].includes(config.MEMPOOL.NETWORK)) {
+      return BlocksAuditsRepository.$getBlockTxAudit(hash, txid);
+    } else {
+      return null;
+    }
+  }
+
   public getLastDifficultyAdjustmentTime(): number {
     return this.lastDifficultyAdjustmentTime;
   }

backend/src/mempool.interfaces.ts

@@ -42,6 +42,19 @@ export interface BlockAudit {
   matchRate: number,
   expectedFees?: number,
   expectedWeight?: number,
+  template?: any[];
+}
+
+export interface TransactionAudit {
+  seen?: boolean;
+  expected?: boolean;
+  added?: boolean;
+  prioritized?: boolean;
+  delayed?: number;
+  accelerated?: boolean;
+  conflict?: boolean;
+  coinbase?: boolean;
+  firstSeen?: number;
 }
 
 export interface AuditScore {

backend/src/repositories/BlocksAuditsRepository.ts

@@ -1,7 +1,7 @@
 import blocks from '../api/blocks';
 import DB from '../database';
 import logger from '../logger';
-import { BlockAudit, AuditScore } from '../mempool.interfaces';
+import { BlockAudit, AuditScore, TransactionAudit } from '../mempool.interfaces';
 
 class BlocksAuditRepositories {
   public async $saveAudit(audit: BlockAudit): Promise<void> {
@@ -98,6 +98,41 @@ class BlocksAuditRepositories {
     }
   }
 
+  public async $getBlockTxAudit(hash: string, txid: string): Promise<TransactionAudit | null> {
+    try {
+      const blockAudit = await this.$getBlockAudit(hash);
+      
+      if (blockAudit) {
+        const isAdded = blockAudit.addedTxs.includes(txid);
+        const isPrioritized = blockAudit.prioritizedTxs.includes(txid);
+        const isAccelerated = blockAudit.acceleratedTxs.includes(txid);
+        const isConflict = blockAudit.fullrbfTxs.includes(txid);
+        let isExpected = false;
+        let firstSeen = undefined;
+        blockAudit.template?.forEach(tx => {
+          if (tx.txid === txid) {
+            isExpected = true;
+            firstSeen = tx.time;
+          }
+        });
+
+        return {
+          seen: isExpected || isPrioritized || isAccelerated,
+          expected: isExpected,
+          added: isAdded,
+          prioritized: isPrioritized,
+          conflict: isConflict,
+          accelerated: isAccelerated,
+          firstSeen,
+        }
+      }
+      return null;
+    } catch (e: any) {
+      logger.err(`Cannot fetch block transaction audit from db. Reason: ` + (e instanceof Error ? e.message : e));
+      throw e;
+    }
+  }
+
   public async $getBlockAuditScore(hash: string): Promise<AuditScore> {
     try {
       const [rows]: any[] = await DB.query(

frontend/src/app/components/transaction/transaction.component.ts

@@ -42,7 +42,7 @@ interface Pool {
   slug: string;
 }
 
-interface AuditStatus {
+export interface TxAuditStatus {
   seen?: boolean;
   expected?: boolean;
   added?: boolean;
@@ -100,7 +100,7 @@ export class TransactionComponent implements OnInit, AfterViewInit, OnDestroy {
   sigops: number | null;
   adjustedVsize: number | null;
   pool: Pool | null;
-  auditStatus: AuditStatus | null;
+  auditStatus: TxAuditStatus | null;
   isAcceleration: boolean = false;
   filters: Filter[] = [];
   showCpfpDetails = false;
@@ -374,7 +374,11 @@ export class TransactionComponent implements OnInit, AfterViewInit, OnDestroy {
         const auditAvailable = this.isAuditAvailable(height);
         const isCoinbase = this.tx.vin.some(v => v.is_coinbase);
         const fetchAudit = auditAvailable && !isCoinbase;
-        return fetchAudit ? this.apiService.getBlockAudit$(hash).pipe(
+        if (fetchAudit) {
+        // If block audit is already cached, use it to get transaction audit
+          const blockAuditLoaded = this.apiService.getBlockAuditLoaded(hash);
+          if (blockAuditLoaded) {
+            return this.apiService.getBlockAudit$(hash).pipe(
               map(audit => {
                 const isAdded = audit.addedTxs.includes(txid);
                 const isPrioritized = audit.prioritizedTxs.includes(txid);
@@ -391,16 +395,20 @@ export class TransactionComponent implements OnInit, AfterViewInit, OnDestroy {
                   accelerated: isAccelerated,
                   firstSeen,
                 };
-          }),
+              })
+            )
+          } else {
+            return this.apiService.getBlockTxAudit$(hash, txid).pipe(
               retry({ count: 3, delay: 2000 }),
               catchError(() => {
                 return of(null);
               })
-        ) : of(isCoinbase ? { coinbase: true } : null);
+            )
+          }
+        } else {
+          return of(isCoinbase ? { coinbase: true } : null);
+        }
       }),
-      catchError((e) => {
-        return of(null);
-      })
     ).subscribe(auditStatus => {
       this.auditStatus = auditStatus;
       if (this.auditStatus?.firstSeen) {

frontend/src/app/services/api.service.ts

@@ -8,6 +8,7 @@ import { Transaction } from '../interfaces/electrs.interface';
 import { Conversion } from './price.service';
 import { StorageService } from './storage.service';
 import { WebsocketResponse } from '../interfaces/websocket.interface';
+import { TxAuditStatus } from '../components/transaction/transaction.component';
 
 @Injectable({
   providedIn: 'root'
@@ -17,6 +18,7 @@ export class ApiService {
   private apiBasePath: string; // network path is /testnet, etc. or '' for mainnet
 
   private requestCache = new Map<string, { subject: BehaviorSubject<any>, expiry: number }>;
+  public blockAuditLoaded: { [hash: string]: boolean } = {};
 
   constructor(
     private httpClient: HttpClient,
@@ -369,11 +371,18 @@ export class ApiService {
   }
 
   getBlockAudit$(hash: string) : Observable<BlockAudit> {
+    this.setBlockAuditLoaded(hash);
     return this.httpClient.get<BlockAudit>(
       this.apiBaseUrl + this.apiBasePath + `/api/v1/block/${hash}/audit-summary`
     );
   }
 
+  getBlockTxAudit$(hash: string, txid: string) : Observable<TxAuditStatus> {
+    return this.httpClient.get<TxAuditStatus>(
+      this.apiBaseUrl + this.apiBasePath + `/api/v1/block/${hash}/tx/${txid}/audit`
+    );
+  }
+
   getBlockAuditScores$(from: number): Observable<AuditScore[]> {
     return this.httpClient.get<AuditScore[]>(
       this.apiBaseUrl + this.apiBasePath + `/api/v1/mining/blocks/audit/scores` +
@@ -526,4 +535,13 @@ export class ApiService {
       this.apiBaseUrl + this.apiBasePath + '/api/v1/accelerations/total' + (queryString?.length ? '?' + queryString : '')
     );
   }
+
+  // Cache methods
+  async setBlockAuditLoaded(hash: string) {
+    this.blockAuditLoaded[hash] = true;
+  }
+
+  getBlockAuditLoaded(hash) {
+    return this.blockAuditLoaded[hash];
+  }
 }

frontend/src/app/services/cache.service.ts

@@ -124,6 +124,7 @@ export class CacheService {
   resetBlockCache() {
     this.blockHashCache = {};
     this.blockCache = {};
+    this.apiService.blockAuditLoaded = {};
     this.blockLoading = {};
     this.copiesInBlockQueue = {};
     this.blockPriorities = [];